Shell code samples (BASH)

How to Install SNMP on Tomato Router Firmware and Graph Traffic with Cacti

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You've flashed your old WRT54G or other vanilla router with the…

Command Line Packet Sniff Existing Running Process in Linux

Have you ever come across a server that is doing a lot of traffic?…

Ubuntu Server in Place Network Upgrade From 8.10 to 9.04

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It is easy to do an in-place upgrade of Ubuntu Server from…

Easy Search and Replace in Multiple Files on Linux Command Line

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I recently came across a typo that existed in a bunch of html…

How To Turn Off Your Monitor Via Command Line in Ubuntu

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As previously written on this blog, I have set up a display in…

Apt-get Update GPG Key Errors and Fix

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Running sudo apt-get upgrade, I started getting this error: Reading…